Income Taxes Components of Deferred Tax asset/ liability (Textual) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Components of deferred tax assets and liabilities [Line Items]
Undistributed Earnings of Foreign Subsidiaries	$ 10.8
State and Local Jurisdiction [Member]
Components of deferred tax assets and liabilities [Line Items]
Operating Loss Carryforwards	85.7
Operating Loss Carryforwards, Expiration Dates	2033
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member]
Components of deferred tax assets and liabilities [Line Items]
Tax Credit Carryforward, Amount	15.3
Tax Credit Carryforward, Expiration Date	2033
Domestic Tax Authority [Member]
Components of deferred tax assets and liabilities [Line Items]
Operating Loss Carryforwards	199.6
Operating Loss Carryforwards, Expiration Dates	2033
Domestic Tax Authority [Member] | Research Tax Credit Carryforward [Member]
Components of deferred tax assets and liabilities [Line Items]
Tax Credit Carryforward, Amount	$ 11.4
Tax Credit Carryforward, Expiration Date	2033